calculate-version/app/test/logger.test.js

'use strict';

const test = require('node:test');
const assert = require('node:assert/strict');

const logger = require('../logger');

// 暫時攔截 process.stdout.write，回傳期間內寫出的內容
function captureStdout(fn) {
    const original = process.stdout.write;
    let out = '';
    process.stdout.write = (chunk) => { out += chunk; return true; };
    try {
        fn();
    } finally {
        process.stdout.write = original;
    }
    return out;
}

// 暫時攔截 process.stderr.write，回傳期間內寫出的內容
function captureStderr(fn) {
    const original = process.stderr.write;
    let out = '';
    process.stderr.write = (chunk) => { out += chunk; return true; };
    try {
        fn();
    } finally {
        process.stderr.write = original;
    }
    return out;
}

test('section 以主/次分隔線包夾標題輸出至 stdout', () => {
    const out = captureStdout(() => logger.section('參數檢查'));
    const line = '='.repeat(50);
    const subline = '-'.repeat(50);
    assert.equal(out, `\n${line}\n參數檢查\n${subline}\n`);
});

test('info 以 [info] 前綴與換行輸出至 stdout', () => {
    const out = captureStdout(() => logger.info('IS_BETA=false'));
    assert.equal(out, '[info] IS_BETA=false\n');
});

test('error 以 [error] 前綴與換行輸出至 stderr', () => {
    const out = captureStderr(() => logger.error('GITEA_SERVER_URL 未設定'));
    assert.equal(out, '[error] GITEA_SERVER_URL 未設定\n');
});

test('error 僅輸出不終止行程，呼叫後仍可繼續執行', () => {
    let reached = false;
    captureStderr(() => { logger.error('still alive'); reached = true; });
    assert.equal(reached, true);
});